santa rosa and napa a half file. be careful out there. we will see some of the fog drift to the south and east of the as you head out there are areas of dense fog this morning, otherwise that should lift by about 8:00 and we will be looking at temperatures warming up into the 60s today. low to mid-60s around the bay and a chilly evening. really looking at pleasant weather the next several days with our numbers warming a few degrees. katie. >> quite a difference a week makes. thank you, lisa. new this morning police in pleasant hill have arrested three teenagers following an explosion. abc7 news reporter is live. they have reason to believe the teenagers had plans for more destruction? >> absolutely, katie. good morning. authorities say worst case scenario, someone could have died if they had come into contact with the pipe bombs the kids had. take a look at this video we have. [explosion sound] [dogs barking] >> what you just is authorities detonating a pipe bomb before it did more damage. police received calls of an explosion in the neig